CA2058495C - Filtre adaptable capable de reconnaitre rapidement un systeme inconnu - Google Patents

Filtre adaptable capable de reconnaitre rapidement un systeme inconnu

Info

Publication number
CA2058495C
CA2058495C CA002058495A CA2058495A CA2058495C CA 2058495 C CA2058495 C CA 2058495C CA 002058495 A CA002058495 A CA 002058495A CA 2058495 A CA2058495 A CA 2058495A CA 2058495 C CA2058495 C CA 2058495C
Authority
CA
Canada
Prior art keywords
signal
tap
taps
signals
maximum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002058495A
Other languages
English (en)
Other versions
CA2058495A1 (fr
Inventor
Akihiko Sugiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2416129A external-priority patent/JP2541378B2/ja
Priority claimed from JP41693190A external-priority patent/JP3173017B2/ja
Priority claimed from JP3031503A external-priority patent/JP2569979B2/ja
Application filed by NEC Corp filed Critical NEC Corp
Publication of CA2058495A1 publication Critical patent/CA2058495A1/fr
Application granted granted Critical
Publication of CA2058495C publication Critical patent/CA2058495C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters

Landscapes

  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CA002058495A 1990-12-27 1991-12-27 Filtre adaptable capable de reconnaitre rapidement un systeme inconnu Expired - Fee Related CA2058495C (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP416129/1990 1990-12-27
JP2416129A JP2541378B2 (ja) 1990-12-27 1990-12-27 アダプティブ・フィルタによる未知システム近似の方法及び装置
JP416931/1990 1990-12-28
JP41693190A JP3173017B2 (ja) 1990-12-28 1990-12-28 アダプティブ・フィルタ
JP3031503A JP2569979B2 (ja) 1991-01-31 1991-01-31 システム特性推定方法及び装置
JP31503/1991 1991-01-31

Publications (2)

Publication Number Publication Date
CA2058495A1 CA2058495A1 (fr) 1992-06-28
CA2058495C true CA2058495C (fr) 1996-02-06

Family

ID=27287346

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002058495A Expired - Fee Related CA2058495C (fr) 1990-12-27 1991-12-27 Filtre adaptable capable de reconnaitre rapidement un systeme inconnu

Country Status (5)

Country Link
US (1) US5245561A (fr)
EP (1) EP0492647B1 (fr)
AU (1) AU648621B2 (fr)
CA (1) CA2058495C (fr)
DE (1) DE69125806T2 (fr)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2569979B2 (ja) 1991-01-31 1997-01-08 日本電気株式会社 システム特性推定方法及び装置
JP2541378B2 (ja) 1990-12-27 1996-10-09 日本電気株式会社 アダプティブ・フィルタによる未知システム近似の方法及び装置
CA2074782C (fr) * 1991-07-30 1997-10-07 Akihiko Sugiyama Methode et dispositif pour identifier un systeme inconnu au moyen d'un filtre adaptatif
US5426704A (en) * 1992-07-22 1995-06-20 Pioneer Electronic Corporation Noise reducing apparatus
US5353026A (en) * 1992-12-15 1994-10-04 Analog Devices, Inc. Fir filter with quantized coefficients and coefficient quantization method
GB2273619B (en) * 1992-12-17 1996-08-28 Sony Broadcast & Communication Digital filtering
JPH06318885A (ja) * 1993-03-11 1994-11-15 Nec Corp 帯域分割適応フィルタによる未知システム同定の方法及び装置
US5381357A (en) * 1993-05-28 1995-01-10 Grumman Corporation Complex adaptive fir filter
JP2576767B2 (ja) * 1993-09-10 1997-01-29 日本電気株式会社 エコー消去方法およびエコーキャンセラ
JP2581458B2 (ja) * 1994-06-15 1997-02-12 日本電気株式会社 アダプティブフィルタの適応化方法及び装置
DE4430189A1 (de) * 1994-08-25 1996-02-29 Sel Alcatel Ag Verfahren zur adaptiven Echokompensation
JP2985675B2 (ja) * 1994-09-01 1999-12-06 日本電気株式会社 帯域分割適応フィルタによる未知システム同定の方法及び装置
JP3359460B2 (ja) * 1995-03-20 2002-12-24 沖電気工業株式会社 適応フィルタ及びエコーキャンセラ
JP2850814B2 (ja) * 1995-12-15 1999-01-27 日本電気株式会社 適応フィルタによる未知システム同定の方法及び装置
US5907497A (en) * 1995-12-28 1999-05-25 Lucent Technologies Inc. Update block for an adaptive equalizer filter configuration
JP2924762B2 (ja) * 1996-02-28 1999-07-26 日本電気株式会社 アダプティブフィルタ及びその適応化方法
US5777910A (en) * 1996-11-19 1998-07-07 Thomson Multimedia S.A. Sparse equalization filter adaptive in two dimensions
US5946351A (en) * 1996-12-27 1999-08-31 At&T Corporation Tap selectable decision feedback equalizer
JP3204151B2 (ja) * 1997-02-13 2001-09-04 日本電気株式会社 適応フィルタ
US6633894B1 (en) 1997-05-08 2003-10-14 Legerity Inc. Signal processing arrangement including variable length adaptive filter and method therefor
KR100249040B1 (ko) * 1997-06-28 2000-03-15 김영환 비대칭 주파수 응답 특성을 갖는 fir 필터
JP3180739B2 (ja) * 1997-11-07 2001-06-25 日本電気株式会社 適応フィルタによる未知システム同定の方法及び装置
US6377968B1 (en) 1998-04-16 2002-04-23 Hitachi, Ltd. Digital filtering circuit
JP2000148160A (ja) * 1998-09-07 2000-05-26 Matsushita Electric Ind Co Ltd システム同定装置、システム同定方法および記録媒体
US6546047B1 (en) * 1998-10-08 2003-04-08 Altima Communications, Inc. Methods and circuits for optimal equalization
US6308192B1 (en) * 1998-11-30 2001-10-23 3Com Corporation Methods and apparatus for adaptive filters
EP1195976B1 (fr) * 2000-05-12 2005-03-23 Siemens Aktiengesellschaft Annuleur d'echo
US7120656B1 (en) 2000-10-04 2006-10-10 Marvell International Ltd. Movable tap finite impulse response filter
GB2380367A (en) * 2001-04-28 2003-04-02 Univ Bradford an adaptive filter (or equaliser) which can increase or decrease its taps in response to errors in the input signal
US7107303B2 (en) * 2002-05-23 2006-09-12 Analog Devices, Inc. Sparse echo canceller
EP1575176A1 (fr) * 2004-03-09 2005-09-14 Deutsche Thomson-Brandt Gmbh Dispositif pour récupérer une séquence binaire par une méthode adaptative
JP2005318530A (ja) * 2004-03-30 2005-11-10 Sanyo Electric Co Ltd タイミング調節方法ならびにそれを利用したデジタルフィルタおよび受信装置
US8139760B2 (en) * 2007-02-27 2012-03-20 Freescale Semiconductor, Inc. Estimating delay of an echo path in a communication system
JP5423958B2 (ja) * 2009-07-21 2014-02-19 セイコーエプソン株式会社 信号判定回路、集積回路装置及び電子機器
JP6700566B2 (ja) 2016-06-30 2020-05-27 株式会社ソシオネクスト 等化回路、受信回路、及び半導体集積回路
WO2019056372A1 (fr) * 2017-09-25 2019-03-28 Global Silicon Limited Filtre adaptatif
CN113141216B (zh) * 2020-01-20 2022-11-15 上海诺基亚贝尔股份有限公司 信号处理方法、设备、装置和计算机可读存储介质

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4374426A (en) * 1980-11-14 1983-02-15 Burlage Donald W Digital equalizer for high speed communication channels
US4791390A (en) * 1982-07-01 1988-12-13 Sperry Corporation MSE variable step adaptive filter
US4727424A (en) * 1986-10-16 1988-02-23 Rca Corporation Sampled data filtering system, including a crossbar switch matrix, as for a ghost cancellation system
US4823136A (en) * 1987-02-11 1989-04-18 Westinghouse Electric Corp. Transmit-receive means for phased-array active antenna system using rf redundancy
DE3879838D1 (de) * 1987-09-30 1993-05-06 Siemens Ag Verfahren und schaltungsanordnung zur erzeugung von filtersignalen.
CA1315356C (fr) * 1988-07-20 1993-03-30 Seiji Miyoshi Filtre adaptatif numerique et methode de convergence utilisee par celui-ci
US5146494A (en) * 1989-07-31 1992-09-08 At&T Bell Laboratories Overlapping look-up-and-add echo canceller requiring a smaller memory size
US5050119A (en) * 1989-10-06 1991-09-17 North American Philips Corporation Optimized sparse transversal filter
EP0421526B1 (fr) * 1989-10-06 1996-07-31 Koninklijke Philips Electronics N.V. Circuit adaptatif pour la suppression d'image fantÔme

Also Published As

Publication number Publication date
AU9009791A (en) 1992-07-02
EP0492647A3 (en) 1992-11-04
AU648621B2 (en) 1994-04-28
EP0492647A2 (fr) 1992-07-01
EP0492647B1 (fr) 1997-04-23
CA2058495A1 (fr) 1992-06-28
DE69125806T2 (de) 1997-09-25
US5245561A (en) 1993-09-14
DE69125806D1 (de) 1997-05-28

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